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Hard Water Survival Kit™ · Hard Water Shampoo
Peptide Prep Detox Shampoo
K18
Read our K18 brand guide →Color-safe peptide detox shampoo with activated charcoal and salicylic acid; removes buildup, oils and metals.
Why Asian Stylists Recommend It
Premium tier for the bleached-hair customer; prep step before K18 mask.
External link — redirects to Amazon.
Best for
Bleached/color-treated hair with metal + product buildup
Avoid if
Sensitive scalp needing daily gentleness
💧 HAO Global Hard Water Project™
First — is it actually your water?
Hard water can be behind the dryness, dullness, and buildup you're trying to fix. Test your tap with a free HAO Water Kit™, get your Water Report™, and add your city to the community water map.
Why we recommend it
K18 Peptide Prep Detox Shampoo is a color-safe detox wash that uses activated charcoal and salicylic acid to lift product buildup, oil and the metals hard water deposits on the hair. On bleached or heavily color-treated Asian hair — porous from the lifting it takes to reach cool tones — that mineral and product film blunts every treatment, and abroad the harder water makes it worse; used weekly, this clears the strand so a bond or repair step actually works. It is the premium tier for the bleached-hair customer and a natural prep step before the K18 mask. Because it is a detox wash, it is not a daily shampoo — skip daily use on a sensitive scalp that needs gentleness, and follow with conditioner or a mask.
Not sure it fits your hair?
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